package com.sixteen.theGreat.settings.web.interceptor;

import com.sixteen.theGreat.commons.constants.Constants;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginInterceptor implements HandlerInterceptor {
    /**
     * 验证是否登录
     */
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object o)
            throws Exception {
        if (request.getSession().getAttribute(Constants.SESSION_USER) == null) {
            response.sendRedirect(request.getContextPath());
            return false;
        }else {
            return true;
        }
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView)
            throws Exception {
    }
    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e)
            throws Exception {
    }
}
